Cold Weather Operation; Service Panel - Miller EnPak Mechanic OM-240 113H Owner's Manual

6-4. Cold Weather Operation

The engine has glow plugs to aid starting.
Ambient Temperature
Starting engine remotely − glow plug timing automatic.
Starting engine from Service Panel − manually holding Glow
Plugs switch.
Plug engine block heater into 120 volts AC when unit is not running. Do not use engine block heater while unit is running.
An optional compressor oil heater is required if the unit is normally operated in temperatures below −13° F (−25° C).

6-5. Service Panel

2
1 Manual/Remote Switch
!
When working on unit, always
move Manual/Remote switch to
Manual position to prevent remote
starting.
This unit can be started from a remote loca-
tion when this switch is in the Remote posi-
tion. Place switch in Manual position when
service side panel is open or when Remote
Panel is disconnected.
When this switch is in the Remote position,
the remaining switches on the service pan-
el do not function.
2 Engine Speed Switch
High position is 3600 RPM and is used
when generator power is required or the
compressor or hydraulic system will be
loaded.
Low position is 2600 RPM and is used
OM-240 113 Page 26
Above 50° F (10° C)
Not needed
Not needed
3
1
12 11
when light loads are present.
3 Fuel Pump Switch
Use switch to power the engine ECU mod-
ule and turn fuel pump on.
4 Glow Plug Switch
Push up to turn glow plugs on. See Section
6-4 for appropriate glow plug timing. Push
down to engage engine starter. Once en-
gine has started, allow switch to return to
center position.
5 Compressor Switch
Use switch to turn compressor (clutch and
valve) on during manual operation.
6 Compressor Temperature LED
Indicates the compressor oil temperature
is too high
7 Compressor Pressure LED
0° F to 50° F (−18° C to 10° C)
10 seconds
Up to 10 seconds
4
5
Indicates the compressor pressure is too
high.
.
If both the Compressor Temperature
and Pressure LEDs are lit, the com-
pressor Pressure Safety Switch
(P−PSW) may be at fault.
8 Engine Error LED
Indicates an engine error. See Table 6-1 for
blink pattern.
9 Glow Plug LED
Indicates the glow plug is on.
10 Compressor On LED
Indicates the compressor is on.
11 Engine Crank LED
Indicates the engine is cranking.
12 Engine On LED
Indicates the engine is running.
Below 0° F (−18° C)
20 seconds
Up to 20 seconds
6
7
8
9
10
239 667-1-A